WLS Codebooks and Flowcharts

Note: Codebooks contain frequency data from the private data release. For some variables, these differ from the frequencies in the public release. Variables that differ between the public and private versions include "(not available on public release)" as part of the variable description, or a note indicating the difference between the public and private versions.

Summary, Status, and Geography

xidof77           Office ID
xxrsib            Relation to graduate
xrsp77,xsmgp      1977 sampling details
xsmtwinx          Graduate and sib twins?
age77             Current age
st77s, xiost77    State of residence
xgeog77, xmcd77   Geocodes for 1977 place of residence
xspl100           Population of 1977 place of residence
xadr70            1977 residence same as 1970?
xtimint - xidint  Time, length, date of interview

xidof77: Office identification number.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: i
*NOT AVAILABLE ON PUBLIC RELEASE*

xxrsib: How are the sibling respondent and the graduate related?

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 51, 51a
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED, 1975 RESPONDENT OR 1977 NONSAMPLE 3402 3270 6672
1 Full siblings 994 1010 2004
2 Adopted 5 14 19
3 Half-siblings with a common mother 15 25 40
4 Half-siblings with a common father 17 16 33
5 Step-siblings 4 6 10
Note: See Appendix A - COR700 for Background variables for the
1977 sibling study.

xrsp77: Sample code for 1977 sibling sample.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: sexrsp, ssbsex, 51, 51a
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NONSAMPLE 3218 3122 6340
1 1975 respondent female, 1977 sibling respondent female, nontwins 0 855 855
2 1975 respondent male, 1977 sibling respondent male, nontwins 854 0 854
3 1975 respondent female, 1977 sibling respondent male, nontwins 295 0 295
4 1975 respondent male, 1977 sibling respondent female, nontwins 0 287 287
11 Twin sample, 1975 respondent female, 1977 sibling respondent female 0 16 16
12 Twin sample, 1975 respondent male, 1977 sibling respondent male 20 0 20
14 Twin sample, 1975 respondent male, 1977 sibling respondent female 0 6 6
15 Twin sample only 41 36 77
21 Sibling is a 1975 respondent, 1975 respondent female, 1977 sibling respondent male, nontwins 1 3 4
22 Sibling is a 1975 respondent, 1975 respondent female, 1977 sibling respondent female, nontwins 0 2 2
31 Twin sample, sibling is a 1975 respondent, 1975 respondent female, 1977 sibling respondent female 0 10 10
32 Twin sample, sibling is a 1975 respondent, 1975 respondent male, 1977 sibling respondent male 4 0 4
33 Twin sample, sibling is a 1975 respondent, 1975 respondent female, 1977 sibling respondent male 4 1 5
34 Twin sample, sibling is a 1975 respondent, 1975 respondent male, 1977 sibling respondent female 0 3 3
Note: See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews.

See Appendix A - COR700 for Background variables for the
1977 sibling study.

xsmgp: Sample code for sex pairs for 1977 sibling sample.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: sexrsp, ssbsex, 51, 51a
Revisions: Updated 3/97 for 1975 primary respondents who were also selected siblings     

Frequencies
Value Label Male Female Total
1 1975 respondent female, 1977 sibling respondent female 0 788 788
2 1975 respondent male, 1977 sibling respondent male 750 0 750
3 1975 respondent female, 1977 sibling respondent male 259 1 260
4 1975 respondent male, 1977 sibling respondent female 0 268 268
5 Twin respondents that did not fall in groups 0-4 above 35 32 67
9 SIBLING NONSAMPLE 3393 3252 6645
Note: See Appendix A - COR700 for Background variables for the
1977 sibling study.

See Appendix A - Memo127a for Selection of sample for sibling study
and other notes. Eleven pairs of twins and three nontwins had already
completed the 1975 interviews.

xsmtwinx: Sample code for twins for 1977 sibling sample.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 51, 51a
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NONSAMPLE 3393 3252 6645
0 NO-- 1975 respondent and 1977 sibling respondent not twins 983 1025 2008
1 YES-- 1975 respondent and 1977 sibling respondent twins 61 64 125
Note: See Appendix A - COR700 for Background variables for the 1977 sibling study.

This variable is identical to xsmtwin in the Status and Descriptive Variables section of WLS Codebooks.

age77: Sibling respondent's current age.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: XCMBRDX
Revisions: Added 9/05     

Frequencies
Value Label Male Female Total
-3 REFUSED, NOT ASCERTAINED 1 0 1
-2 3955 4254 8209
21 - 31 226 236 462
32 - 35 252 260 512
36 - 40 257 264 521
41 - 47 227 229 456
48 - 63 73 83 156

st77s: Sibling respondent's current state of residence. Wisconsin or not Wisconsin on public release.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 92
Revisions: Added 9/04     

Frequencies
Value Label Male Female Total
-2 364 391 755
-1 DON'T KNOW 3559 3825 7384
0 Foreign Country 26 19 45
1 Alabama 1 5 6
3 Arizona 13 7 20
4 Arkansas 1 0 1
5 California 30 45 75
6 Colorado 14 6 20
7 Connecticut 3 0 3
8 Delaware 1 0 1
9 Washington, D.C. 0 1 1
10 Florida 15 10 25
11 Georgia 3 4 7
13 Idaho 0 3 3
14 Illinois 29 62 91
15 Indiana 8 5 13
16 Iowa 3 9 12
17 Kansas 4 2 6
18 Kentucky 2 3 5
19 Louisiana 2 1 3
20 Maine 0 1 1
21 Maryland 6 5 11
22 Massachusetts 3 7 10
23 Michigan 13 9 22
24 Minnesota 53 47 100
26 Missouri 4 1 5
27 Montana 5 3 8
28 Nebraska 2 1 3
29 Nevada 1 0 1
30 New Hampshire 3 1 4
31 New Jersey 6 3 9
32 New Mexico 1 3 4
33 New York 1 6 7
34 North Carolina 3 2 5
35 North Dakota 1 2 3
36 Ohio 11 9 20
37 Oklahoma 2 0 2
38 Oregon 6 3 9
39 Pennsylvania 5 0 5
41 South Carolina 1 0 1
42 South Dakota 0 1 1
43 Tennessee 6 3 9
44 Texas 10 11 21
45 Utah 1 1 2
47 Virginia 5 1 6
48 Washington 11 10 21
49 West Virginia 1 2 3
50 Wisconsin 751 794 1545
51 Wyoming 1 2 3
Note: Only codes "50" for Wisconsin and "0" for not Wisconsin are
available on the public release.

See Appendix J, Cor483S for state codes.

xiost77: Did the sibling respondent live in Wisconsin at the time of interview?

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 92
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
0 NO 279 310 589
1 YES 765 779 1544

xgeog77: Sibling respondent's current address.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 92
Revisions: Updated 3/97     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
40,130,305 3 2 5
90,012,610 1 0 1
121031900 1 1 2
340192405 0 1 1
482011975 0 3 3
550090700 3 4 7
550470000 0 1 1
551112265 1 1 2
551331720 3 3 6
Note: Digits 1-2 reflect state, digits 3-5 reflect county, and digits
6-9 reflect place. Unknown or uncodable responses for state, county,
place or Minor Civil Division are coded zeros.

See Appendix B - Memo007 for Codes from Geographic Location
Codes, 1970 Census PHC (R)-3 (State, County, Place).

If R lived in a foreign country, the code was taken from
Geographical Location Codes (Sept. 1969), U.S. General
Services Administration, Office of Finance.

For the 25 sib-respondents who are also graduates (XSTAT77=10),
XGEOG77 is the code for 1975 place of residence.

xmcd77: Minor Civil Devision for 1977 sibling respondent's address.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 92
Revisions: Updated 3/97     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
0 Could not code 0 2 2
002 - 440 Minor Civil Division 1044 1087 2131
Note: This variable must be used with XGEOG77.

xspl100: Size of 1977 place of residence in hundreds using 1970 census data.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: XGEOG77
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3441 3306 6747
00000 - 00009 1-950 86 87 173
00010 - 33670 951-3,367,050 908 947 1855
78949 7,894,900 2 1 3
Note: This code has been rounded to the nearest 100 then truncated
to hundreds. For example, code "0" is for places from 1-50
in size, code "1" is for 51-150, etc. See Appendix B - COR337a
and COR344a for creation of size of place variables.

For the 25 sib-respondents who are also graduates (XSTAT77=10),
XSPL100 is the code for 1975 place of residence.

xadr70: Is current residence same as that of march, 1970?

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: 14
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3253 6646
0 NO 664 603 1267
1 YES 380 485 865

xtimint: Time started interview.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: v
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
-2 8 17 25
0820 - 2132 8:20AM to 9:32PM 1036 1072 2108
Note: See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews..

xlngint: Length of interview.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: v, vi
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
-2 8 17 25
010 - 095 Ten to ninety-five minutes 1036 1072 2108
10 10 min 1 0 1
95 95 min 0 1 1
Note: See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews.

xmoint: Month of interview.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: ii
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
-2 8 17 25
1 January 35 79 114
2 February 585 672 1257
3 March 401 315 716
4 April 11 6 17
5 May 4 0 4
Note: See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews.

xdayint: Day of interview.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: ii
Revisions: Updated 3/97     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
-2 8 17 25
1 1st day of mth 39 62 101
01 - 31 First to thirty-first day of month 1036 1072 2108
31 31st day of mth 18 37 55
Note: See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews.

xcmint: Date of interview.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: ii
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
902 - 929 CENTURY MONTHS 1044 1089 2133
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

No allocations were needed for construction so there is no allocation flag
accompanying this variable. 1975 respondents have date of 1975 interview.
Allocation flags indicate whether some method other than "straight" coding
was used to assign a code to a variable.

See Appendix A - Memo127a for Selection of sample for sibling
study and other notes. Eleven pairs of twins and three nontwins had
already completed the 1975 interviews.

xidint: Interviewer ID #.

Data source: Sibling Respondent      Collected in: 1977      Mode: phone
Source variables: iv
Revisions: Updated 3/97     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONSAMPLE 3393 3252 6645
01 - 62 Specific interviewer ID# 1044 1089 2133

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